package com.example.service;

/**
 * @program: overer
 * @description:
 * @author: 诸葛龙辰
 * @create: 2022-11-14 21:11
 **/
public class BookShopService {
    /**
     * 购买图书
     *
     * @param isbn     图书编号
     * @param username 账户名
     */
    public void purchase(String isbn, String username) {

    }

}
